Ulrich Abel, Linda Beukemann, Vitaliy Kushnirevych. Rolling Curves: An Old Proof of the Roulette Lemma. The American Mathematical Monthly, 124(8):723-736, 2017. [doi]
@article{AbelBK17,
title = {Rolling Curves: An Old Proof of the Roulette Lemma},
author = {Ulrich Abel and Linda Beukemann and Vitaliy Kushnirevych},
year = {2017},
url = {https://www.tandfonline.com/doi/abs/10.4169/amer.math.monthly.124.8.723},
researchr = {https://researchr.org/publication/AbelBK17},
cites = {0},
citedby = {0},
journal = {The American Mathematical Monthly},
volume = {124},
number = {8},
pages = {723-736},
}